I'm buying a lot of food and everything else I can think of, I'm new at this. Family thinks I'm nuts. Going it alone. I have a vacuum bag sealer, a good one, and tons of bags, and have oxygen absorbers on the way. Can I put my own new boxed food in them with a oxy. absorber? Like powdered milk, it's good for 2/3 years new, if in a vacuum bag, with the absorber, won't it last years and years too? Then I can do small package mixes, my own sugar, and teas, does anyone have the answer to this? Also, if I bag seal batteries, do I need an axygen absorber in them too?